﻿<!DOCTYPE html>
<html>
<head>
  <title>Kitten Monitor</title>
  <!-- Copyright 1998-2020 by Northwoods Software Corporation. -->
  <meta name="description" content="A visual monitor of the position of kittens in a house." />
  <meta name="viewport" content="width=device-width, initial-scale=1">

  <script src="../release/go.js"></script>
  <script src="../assets/js/goSamples.js"></script>  <!-- this is only for the GoJS Samples framework -->
  <script id="code">
    function init() {
      if (window.goSamples) goSamples();  // init for these samples -- you don't need to call this
      var $ = go.GraphObject.make;  // for conciseness in defining templates

      myDiagram =
        $(go.Diagram, "myDiagramDiv",
          {
            initialContentAlignment: go.Spot.TopLeft,
            isReadOnly: true,  // allow selection but not moving or copying or deleting
            scaleComputation: function(d, newsc) {
              // only allow scales that are a multiple of 0.1
              var oldsc = Math.round(d.scale * 10);
              var sc = oldsc + ((newsc * 10 > oldsc) ? 1 : -1);
              if (sc < 1) sc = 1;  // but disallow zero or negative!
              return sc / 10;
            },
            "toolManager.hoverDelay": 100  // how quickly tooltips are shown
          });

      // the background image, a floor plan
      myDiagram.add(
        $(go.Part,  // this Part is not bound to any model data
          {
            width: 840, height: 570,
            layerName: "Background", position: new go.Point(0, 0),
            selectable: false, pickable: false
          },
          $(go.Picture, "https://upload.wikimedia.org/wikipedia/commons/9/9a/Sample_Floorplan.jpg")
        ));

      // the template for each kitten, for now just a colored circle
      myDiagram.nodeTemplate =
        $(go.Node,
          new go.Binding("location", "loc"),  // specified by data
          new go.AnimationTrigger("position", { duration: 2000 }),
          { locationSpot: go.Spot.Center },   // at center of node
          $(go.Shape, "Circle",
            { width: 15, height: 15, strokeWidth: 3 },
            new go.Binding("fill", "color", makeFill),
            new go.Binding("stroke", "color", makeStroke)
          ),  // also specified by data
          { // this tooltip shows the name and picture of the kitten
            toolTip:
              $("ToolTip",
                $(go.Panel, "Vertical",
                  $(go.Picture, { margin: 3 },
                    new go.Binding("source", "src", function(s) { return "images/" + s + ".png"; })),
                  $(go.TextBlock, { margin: 3 },
                    new go.Binding("text", "key"))
                )
              )  // end Adornment
          }
        );

      // pretend there are four kittens
      myDiagram.model.nodeDataArray = [
        { key: "Alonzo", src: "50x40", loc: new go.Point(220, 130), color: 2 },
        { key: "Coricopat", src: "55x55", loc: new go.Point(420, 250), color: 4 },
        { key: "Garfield", src: "60x90", loc: new go.Point(640, 450), color: 6 },
        { key: "Demeter", src: "80x50", loc: new go.Point(140, 350), color: 8 }
      ];

      // simulate some real-time position monitoring, once every 2 seconds
      function randomMovement() {
        var model = myDiagram.model;
        model.startTransaction("update locations");
        var arr = model.nodeDataArray;
        var picture = myDiagram.parts.first();
        for (var i = 0; i < arr.length; i++) {
          var data = arr[i];
          var pt = data.loc;
          var x = pt.x + 25 * Math.random() - 10;
          var y = pt.y + 25 * Math.random() - 10;
          // make sure the kittens stay inside the house
          var b = picture.actualBounds;
          if (x < b.x || x > b.right) x = pt.x;
          if (y < b.y || y > b.bottom) y = pt.y;
          model.setDataProperty(data, "loc", new go.Point(x, y));
        }
        model.commitTransaction("update locations");
      }
      function loop() {
        setTimeout(function() { randomMovement(); loop(); }, 2000);
      }
      loop();  // start the simulation

      // generate some colors based on hue value
      function makeFill(number) {
        return HSVtoRGB(0.1 * number, 0.5, 0.7);
      }
      function makeStroke(number) {
        return HSVtoRGB(0.1 * number, 0.5, 0.5); // same color but darker (less V in HSV)
      }
      function HSVtoRGB(h, s, v) {
        var r, g, b, i, f, p, q, t;
        i = Math.floor(h * 6);
        f = h * 6 - i;
        p = v * (1 - s);
        q = v * (1 - f * s);
        t = v * (1 - (1 - f) * s);
        switch (i % 6) {
          case 0: r = v, g = t, b = p; break;
          case 1: r = q, g = v, b = p; break;
          case 2: r = p, g = v, b = t; break;
          case 3: r = p, g = q, b = v; break;
          case 4: r = t, g = p, b = v; break;
          case 5: r = v, g = p, b = q; break;
        }
        return 'rgb(' +
          Math.floor(r * 255) + ',' +
          Math.floor(g * 255) + ',' +
          Math.floor(b * 255) + ')';
      }
    }
  </script>
</head>
<body onload="init()">
<div id="sample">
  <div id="myDiagramDiv" style="border: solid 1px black; width:100%; height:600px"></div>
  <p>This diagram displays a monitored floor plan with several nodes (representing kittens) to view in real-time.</p>
  <p>Every two seconds the kitten positions are updated</p>
  <p>The <a href="../intro/toolTips.html">Tooltip</a> for each kitten shows its name and photo.</p>
  <p>There is a custom <a>Diagram.scaleComputation</a> that limits the <a>Diagram.scale</a> values to multiples of 0.1.</p>
</div>
</body>
</html>